What Are Blue Light Glasses?
Blue light blocking glasses have specially crafted lenses that are said to block or filter out the blue light given off from digital screens. The lenses are often marked with a coating that protects your eyes from eye strain and can help reduce potential damage to your retina from prolonged exposure to blue light.
Tortoiseshell glasses are comfortable to wear.
For myopic friends, a comfortable frame is needed. Tortoiseshell glasses frame is convenient to wear. When you sweat in summer, the frames will not slide, and the bridge of your nose will not be marked. This is one of the reasons why many people like tortoiseshell frames.
For people who need to wear glasses, it is very important to match a suitable pair of glasses, because glasses will usually use for a long time. If the collocation is not good, it will not only affect the appearance, but bring dizziness, or even eye discomfort. Tortoiseshell glasses frame again gets the public love and becomes the pursuit of personality of modern fashion, tide.
What Are Varifocal Glasses?
Varifocal glasses, also known as varifocals, varifocal lenses, PALs, or progressive lenses, have a gradual change in strength from the top of the lens to the bottom with multiple focal points in between. This allows you to see all distances and focus points through just one lens. Varifocal lenses are typically used when you have two prescriptions, one for distance and one for reading.
There are three regions of a varifocal lens which are distant zone, intermediate zone and, near/reading zone. Usually, the upper portion of the varifocal lens is the distant zone and the bottom portion of the varifocal lens is the near or reading zone.
One of the benefits of varifocal glasses is that you do not need to prepare 2 separate pairs of glasses or need to switch between frames for different vision needs.
In addition to Ray-Ban, Vogue、Fendi, and other first-line eyewear brands, Selectspecs also owns many affordable and self-owned eyewear brands, among which Infinity is the representative brand of youth and fashion.
But the texture will not lose to a line brand. And the choice is very rich. The classic black-rimmed glasses, or the stylish metal-rimmed glasses, or the tortoise-shell glasses with a retro vibe, are brimming with youthful fashion.
The fashion sense of Infinity is stronger, in line with the aesthetic of young people today. There are many fashion trend items, very suitable for building your personal image. There are many styles of glasses, such as classic black frames and popular gold frames.
Are titanium glasses really more expensive?
Due to its lightweight, corrosion resistance, non-allergic and memory quality, titanium is becoming a new type of glass frame material. But titanium frames are more expensive than other metal, sheet, or plastic frames. Titanium is not a rare metal. It has the fourth-largest reserves after aluminum, iron, and magnesium, and is 16 times more than the world's copper, nickel, leads, and zinc combined. Scarce resources are supposed to have higher prices. With so much titanium in store, why would titanium frames be more expensive than frames made of other materials?
Disadvantages of Prism Glasses
Although prism glasses are mostly used for correcting binocular vision, they also have some disadvantages which are said by those who have worn them. They said they suffer from some discomforts, such as headaches, pain with eye movement, wandering eyes. Misaligned eyes, nausea, double vision, and more. In most cases, side effects can be corrected with an adjustment to someone’s lens prescription, eyeglasses frames or medication.
At the same time, you need to know that alignment is extremely important when wearing prism lenses. Prism lenses may be not efficient if they are misaligned. But they can be fixed with a professional adjustment. If you are experiencing any problems with new glasses or your old prism lenses stop working, contact your vision optometrist.
How to buy anti-blue light products?
In order to further standardize anti-blue light products and make all kinds of products effectively protect eye health, relevant standards have been formulated. Based on the different effects of blue light in different bands on the human body, the transmittance of blue light in each band is required in the standards.
For example, in the band range of 415-445 nm, the transmission ratio of light is less than or equal to 80%, and more than 445 nm, it is greater than 80%.